Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Towing Vessel
Sylvia H
MMSI 367100210 · Call sign WDE2527
Not yet on Master's MateType
Towing Vessel
Flag
USALength
37 m
Beam
10.3 m
Draft
3.2 m
Call sign
WDE2527
IMO
8845339
Official No.
685579
AIS reports
2
On the American registry, Sylvia H is a 37-metre harbour workboat. Below, she has a 10.3 m beam and a draft of 3.2 m. She's on record as MMSI 367100210, call sign WDE2527, IMO 8845339. Put Sylvia H on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for working boats
Built for boats that work — like Sylvia H.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Sylvia H roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Sylvia H on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Sylvia H and switch it all on
Free to join · nothing to install to start · cancel anytime
About Sylvia H
What kind of vessel is Sylvia H?
Sylvia H is a Towing Vessel flagged to United States of America.
What is Sylvia H's MMSI?
Sylvia H's MMSI is 367100210. Call sign WDE2527. IMO 8845339.
How big is Sylvia H?
Sylvia H is about 37 m long, 10.3 m on the beam, drawing 3.2 m.
Is Sylvia H on the Master's Mate Safety Initiative Network?
Not yet. If Sylvia H is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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